Door fastening



L. M. DYSUN DOOR FASTENING April 26, 1938.

Filed July 22, 1936 Patented Apr. 26, 1938 UNITED STATES PATENT OFFIQE DOOR FASTENING Application July 22, 1936, Serial No. 91,845

5 Claims.

-My invention relates to the class of devices that are employed for securing doors in closed positions, and an object of my invention, among others, is the production of a fastening that may be used at different edges of a door or to engage the edges of door openings located in different positions with respect to the edges of the doors; and a further object of the invention is to provide a fastening that will accommodate itself to engagement with the edges of door openings which may be of different thicknesses; and a further object of the invention is to provide a fastening of this class that shall be simple in construction and particularly efficient in operation.

One form of a fastening embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained is illustrated in the accompanying drawing in which- Figure 1 is a face View of a portion of a locker construction showing my improved look as applied to one of the doors thereof.

Figure 2 is a detail View on enlarged scale in horizontal section through a portion of a door and the opening therefor and on a plane denoted by the dotted line 2--2 of Figure 1.

Figure 3 is a view similar to Fig. 2 but showing the cam bolt located in a different position for locking engagement with the door opening.

Figure 4 is a rear view of the device with the parts in the position shown in Fig. 2.

Figure 5 is a view similar to Fig. 4 but with the cam bolt removed.

Figure 6 is a view of the parts disconnected but in their relative positions for being assembled.

Figure 7 is a detail side view of the cylinder and plug illustrating their general form.

Figure 8 is a detail view illustrating a little different form of the cam bolt.

Figure 9 is a side view of the same shown in place on a lock cylinder.

In the use of lockers composed of sheet metal and such as are commonly used in school houses, athletic clubs, and the like, the doors are so constructed, from necessity or convenience, that it may be desired to locate the cam bolt for fastening the door in different positions with respect to the cylinder by which the cam bolt is supported. Locker construction is such that the edges of the door openings with which the bolts engage are often of different thicknesses so that a lock made for a door of a certain thickness will not closely engage'the edge of a door opening of another thickness.

My improved lock illustrated and described herein is so constructed that the cam bolt may be placed in different positions upon the cylinder so that it may be made to engage the edges of door openings located in different positions rela' tively to the lock, that is, it may be employed to project from the righthand edge of the door or from the lefthand edge of the door or it may be made to engage holding members vertically in either of opposite positions. It is also provided 10 with means whereby the bolt may be caused to closely engage the edges of door openings of different thicknesses, in the accompanying drawing the numeral 1 denoting a bank of lockers provided with doors 8 hinged to the front faces of the lockers to close the door openings 9 therein. These doors are provided with my improved lock which comprises a cylinder 10 having the usual plug or barrel ll commonly of the pin tumbler type and having a key slot l2. 7

The cylinder has an escutcheon l3 at its outer 2 end to contact with the face of a door and a nut l4 screw threadedly engages with the cylinder to contact with the rear face of the door to secure the cylinder in place. The plug l l projects from the rear end of the cylinder and has a stop l5 in the form of a screw projecting therefrom to engage stop shoulders 16 on the cylinder, and as shown in Fig. 2 of the drawing.

A positioning lug ll projects from the inner end of the plug ll, this lug being preferably of square shape and a fastening stud I8 projects from the end of the lug ll, said stud being screw threaded to receive a nut IQ for securing in place a cam bolt now to be described.

This cam bolt 20 has a positioning slot 2! extending inwardly from its rear end said slot being shaped to fit the lug I1, and a retaining recess 22 of partially circular form opens into said slot, said recess being shaped to fit the round portion 23 of the plug or barrel. It is obvious that the open end of the slot 20 might be closed thereby creating a hole to fit the positioning lug, but I prefer for reasons of convenience to have this opening in the form of a slot.

In order that the cam bolt may be arranged to engage with door openings of diiferent thicknesses I provide the cam bolt with a locking stud 24 which is screw threadedly engaged with the cam bolt and is provided with a lock nut 25 for securing the stud in different positions. The stud has a head 26 to engage the inner surface of a locker or frame adjacent to the door opening therein, and by the use of this stud the cam bolt may be arranged to closely engage with the back face of the locker or frame adjacent to the opening and thereby tightly hold the door in place, irrespective of the thickness of the frame or case surrounding such door opening, and it will be noted that owing to the peculiar function of the stud 23 I have referred to it as being a part of the cam bolt.

The different positions in which the bolt may be placed relatively to the plug, that is, the arrangement whereby the bolt may be secured to the plug to suit different conditions as to the position of the edge of the door opening, is illustrated in dotted lines in Figure 4 whereby it will be seen that the bolt may be secured in four different positions upon the plug.

In the form of the structure illustrated in Figure 8 a little different shape of cam bolt is shown, this bolt having an offset end 21 in which the locking stud 24 is mounted. The bolt has a slot in which the positioning lug I! is received in the manner hereinbefore described. In this form of construction by reversing the bolt as shown in dotted lines in Fig. 9, the device may be adapted to door openings widely different in the matter of thickness, and the locking stud 24 may be employed for securing the finer adjustments.

In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim:

1. A door fastening including a rotatably mounted plug substantially round in cross section, a lug non-circular in shape in cross section projecting from the end of said plug, a cam bolt having an opening to fit the round portion of said plug and another portion to fit said lug, and means for securing said cam bolt in place.

2. A door fastening including a rotatably mounted plug substantially round in cross-section, a substantially square lug projecting from the end of said plug, a cam bolt having an opening to fit the round portion of said plug and a squared portion to fit said lug, and means for securing said cam bolt in place.

3. A door fastening including a rotatably mounted plug substantially round in cross-section, a substantially square lug projecting from the end of said plug, a cam bolt having a slot extending inwardly from its end, a portion of said slot being round to fit the round portion of said plug and a portion of said slot having parallel sides to fit said square lug, and means for securing the cam bolt in place.

4. A door fastening including a rotatably mounted plug substantially round in cross-section, a lug of angular shape in cross-section projecting from the end of said plug, a cam bolt having an opening to fit said lug, said cam bolt having an offset end for use with the bolt in reversed positions to increase its effective fastening range for application to structures of different thicknesses, and means for securing the bolt to the plug.

5. A door fastening including a rotatably mounted plug substantially round in cross-section, 9. lug of angular shape in cross-section projecting from the end of said plug, a cam bolt having an opening to fit said lug, said bolt having an offset end to permit its use in reversed positions to increase its effective fastening range for application to structures of different thicknesses, a bolt adjustably mounted in said lug and having an enlarged head to engage the inner face of a frame surrounding a door opening, and means for securing the bolt to the plug.

LOUIS M. DYSON. 

